Expression and function of Dlx genes in the osteoblast lineage

Haitao Li, Inga Marijanovic, Mark S. Kronenberg, Ivana Erceg, Mary Louise Stover, Dimitrios Velonis, Mina Mina, Jelica Gluhak Heinrich, Stephen E Harris, William B. Upholt, Ivo Kalajzic, Alexander C. Lichtler

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Our laboratory and others have shown that overexpression of Dlx5 stimulates osteoblast differentiation. Dlx5-/-/Dlx6-/- mice have more severe craniofacial and limb defects than Dlx5-/-, some of which are potentially due to defects in osteoblast maturation. We wished to investigate the degree to which other Dlx genes compensate for the lack of Dlx5, thus allowing normal development of the majority of skeletal elements in Dlx5-/- mice. Dlx gene expression in cells from different stages of the osteoblast lineage isolated by FACS sorting showed that Dlx2, Dlx5 and Dlx6 are expressed most strongly in less mature osteoblasts, whereas Dlx3 is very highly expressed in differentiated osteoblasts and osteocytes. In situ hybridization and Northern blot analysis demonstrated the presence of endogenous Dlx3 mRNA within osteoblasts and osteocytes. Dlx3 strongly upregulates osteoblastic markers with a potency comparable to Dlx5. Cloned chick or mouse Dlx6 showed stimulatory effects on osteoblast differentiation. Our results suggest that Dlx2 and Dlx6 have the potential to stimulate osteoblastic differentiation and may compensate for the absence of Dlx5 to produce relatively normal osteoblastic differentiation in Dlx5 knockout mice, while Dlx3 may play a distinct role in late stage osteoblast differentiation and osteocyte function.

Original languageEnglish (US)
Pages (from-to)458-470
Number of pages13
JournalDevelopmental Biology
Volume316
Issue number2
DOIs
StatePublished - Apr 15 2008

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Osteoblasts
Osteocytes
Genes
Knockout Mice
Northern Blotting
In Situ Hybridization
Up-Regulation
Extremities
Gene Expression
Messenger RNA

Keywords

  • Bone
  • Dlx2
  • Dlx3
  • Dlx5
  • Dlx6
  • FACS
  • GFP
  • Osteoblast differentiation
  • Osteoblast lineage

ASJC Scopus subject areas

  • Developmental Biology

Cite this

Li, H., Marijanovic, I., Kronenberg, M. S., Erceg, I., Stover, M. L., Velonis, D., ... Lichtler, A. C. (2008). Expression and function of Dlx genes in the osteoblast lineage. Developmental Biology, 316(2), 458-470. https://doi.org/10.1016/j.ydbio.2008.01.001

Expression and function of Dlx genes in the osteoblast lineage. / Li, Haitao; Marijanovic, Inga; Kronenberg, Mark S.; Erceg, Ivana; Stover, Mary Louise; Velonis, Dimitrios; Mina, Mina; Heinrich, Jelica Gluhak; Harris, Stephen E; Upholt, William B.; Kalajzic, Ivo; Lichtler, Alexander C.

In: Developmental Biology, Vol. 316, No. 2, 15.04.2008, p. 458-470.

Research output: Contribution to journalArticle

Li, H, Marijanovic, I, Kronenberg, MS, Erceg, I, Stover, ML, Velonis, D, Mina, M, Heinrich, JG, Harris, SE, Upholt, WB, Kalajzic, I & Lichtler, AC 2008, 'Expression and function of Dlx genes in the osteoblast lineage', Developmental Biology, vol. 316, no. 2, pp. 458-470. https://doi.org/10.1016/j.ydbio.2008.01.001
Li H, Marijanovic I, Kronenberg MS, Erceg I, Stover ML, Velonis D et al. Expression and function of Dlx genes in the osteoblast lineage. Developmental Biology. 2008 Apr 15;316(2):458-470. https://doi.org/10.1016/j.ydbio.2008.01.001
Li, Haitao ; Marijanovic, Inga ; Kronenberg, Mark S. ; Erceg, Ivana ; Stover, Mary Louise ; Velonis, Dimitrios ; Mina, Mina ; Heinrich, Jelica Gluhak ; Harris, Stephen E ; Upholt, William B. ; Kalajzic, Ivo ; Lichtler, Alexander C. / Expression and function of Dlx genes in the osteoblast lineage. In: Developmental Biology. 2008 ; Vol. 316, No. 2. pp. 458-470.
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